There may be no single cause of bipolar disorder (aka manic depression). Instead, research indicates the causes of bipolar disorder are probably a combination of biochemical, genetic and environmental factors that may trigger and perpetuate the chemical imbalances in the brain.
Net worth: $829 million. Telecommunications mogul Strive Masiyiwa is widely regarded as the richest man in Zimbabwe and is one of the richest men in Africa with a net worth of more than US$800 million.
Zimbabwe (/zÉªmËbÉËbweÉª/), officially the Republic of Zimbabwe, is a landlocked country located in southern Africa, between the Zambezi and Limpopo Rivers.It borders South Africa to the south, Botswana to the west, Zambia to the northwest, and Mozambique to the east.resident Robert Mugabe serves as head of state and government, and as commander-in-chief of the armed forces. Renowned as a champion for the anticolonial cause, Mugabe also has a reputation as an authoritarian figure responsible for Zimbabwe's problematic human rights record and substantial economic decline.